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我厂年产600吨氯化钾的主要设备二效蒸发室的真空是用气压式混合冷凝器来达到的。在长期生产过程中,真空度只能在620mmHg,温度78～80℃。它是用海水通过7～8层多孔淋水板(每层板开有1600个φ6mm的孔)来达到的。这样,经常受到海水中的碳渣、杂草、铁锈等物堵塞板孔,真空度逐渐下降到58mmHg左右,造成一效正压很大,设备腐蚀严重,操作不稳定。因此每年都要被迫停车2～3次进行清除拆装工作。为此,我们在海水动力和二效尾气管不变的情况下,适当加粗混合冷凝器直径和下水管,同时对内部结构进行了改革,
I plant an annual output of 600 tons of potassium chloride main equipment Second-rate evaporation chamber vacuum is used to reach the pressure-type hybrid condenser. In the long-term production process, the degree of vacuum can only 620mmHg, temperature 78 ~ 80 ℃. It is made of sea water through 7 to 8 porous perforated plates (each with 1600 holes of 6mmφ). In this way, often by sea water in the carbon residue, weeds, rust and other objects blocked board hole, the vacuum gradually dropped to about 58mmHg, resulting in a positive pressure is large, serious corrosion of equipment, unstable operation. So every year to be forced to stop 2 to 3 times to remove the disassembly work. To this end, we are in the sea power and the second exhaust pipe unchanged, the appropriate bold mixing condenser diameter and sewer, while the internal structure has been reform,